For use with Hot Tub Filter Cartridges

• Lower your bromine or chlorine use up to 50% with minerals Soft feeling water that's easier on your skin, swimsuits and spa surfaces Convenient reminder dial - set it and forget it for 4 months Easy installation into most filters - no assembly required

The mineral sanitizer that cleans and softens hot tub water inside your filter cartridge. While you'll add dichlor or bromine separately, you'll need half the usual amount, because our FROG® minerals are active sanitizers. The result is you kill bacteria two-ways - with minerals and a low level of chlorine or bromine. We call it Fresh mineral Water® because it looks and feels amazing.